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Note 5 - Lease Intangibles - Net Value of Other Intangibles (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Lease intangibles, gross	$ 3,475,531	$ 4,110,139
Accumulated Amortization	(3,468,898)	(4,090,362)
Lease Intangibles, net	6,633	19,777
Leases, Acquired-in-Place [Member]
Lease intangibles, gross	2,377,414	2,515,264
Accumulated Amortization	(2,374,285)	(2,504,799)
Lease Intangibles, net	3,129	10,465
Leasing Costs [Member]
Lease intangibles, gross	1,098,117	1,261,390
Accumulated Amortization	(1,094,613)	(1,252,078)
Lease Intangibles, net	3,504	9,312
Above Market Lease [Member]
Lease intangibles, gross	0	333,485
Accumulated Amortization	0	(333,485)
Lease Intangibles, net	$ 0	$ 0

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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